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t e e h S m e e h s 2 Na m H NU AA M H 0G N I Gm .N K a d 0 M U w No.559,850. Patented May 12, 1896.

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KNITTING MACHINE.

No. 559,850. Patented May 152, 1896.

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EMIL G. JOI'IANSON, OF ROCKFORD, ILLINOIS, ASSIGNOR TO PETER O. JOHNSON,OF SAME PLACE.

KNITTING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 559,850, dated May 12,1896.

Application filed March 12, 1895. Serial No. 541,510. (No model.)

To aZZ whom it may concern.-

Be it known that I, EMIL G. JOHANSON, a subject of the King of Swedenand Norway, residing at Rockford, in the county of Winnebago and Stateof Illinois, have invented certain new and useful Improvements inKnitting-liachines, of which the following is a specification.

The object of this invention is to operate the needles of a straight-knittin g machine by a reversible rotary movement of a cylinderhavinga spiral extending in its lengthwise direction.

In the accompanying drawings, Figure 1 is a plan view of such portion ofa knitting-machine with which my improvements have a connection. Fig. 2is an end elevation. Fig. 3 is a vertical transverse section.

In the construction of straight-knitting machines it has been impossibleto attain a speed approximating the speed of a circularknitting machine,owing to the fact that at each reciprocation of the cam-slide it mustcome to a standstill, and in so doingthe speed is comparatively slow,and my improvements are calculated to increase the speed of the straightmachines.

The main frame maybe of any known construction, and in this instanceconsists of the end bars 1, held separated b y the needle-beds 2, byrods 3, passing through the beds and end bars. These needle-beds standin an inclined position, being lowest at their outer ends, and theirupper faces are provided with needle-grooves. "Within these grooves arelo cated knitting-needles 4:, and to their lower ends are connectedjacks 5. These jacks have an upward extension 6, which is vorticallyslotted transversely of its length.

Over the lower end of each of the needlebeds is located a cylinder orroll 7, supported in bearings 77 in the end bars 1, each having a spiralrib 8, making at least a complete revolution of the roll, and on eachside of this projection is formed a groove 9. These rolls are so locatedwith respect to the vertically slotted projection of the needle-jacksthat the spiral rib will enter the slot of the projection.

To one end of each roll is secured a pinion 10, and adjacent to eachpinion is pivoted a toothed segment 11, the teeth of which ongage theteeth of the pinions. These segments have a connection through themedium of the link 12, and one of the segments has a connection with thecrank 13 by means of the link 14. This crank is carried by a shaft 15,held in bearings depending from the side bars of the main frame, and onits other end are located tight and loose pulleys 1G and 1'7. If arotary movement be imparted to the fast pulley 16, its shaft and crankwill also be rotated, and through its linked connection with one of thesegments and the segments connected together an oscillatory movementwill be imparted to the segments, which will impart a reversible rotarymovement to the rolls. hen the needles and jacks are in the positionshown in solid lines at Fig. 3, the upward extension of the jacks willbe directly under the rolls, and the upper ends of the projection willlie within the grooves 9 each side of the rib. When the jacks andneedles are in their extreme downward position, the upper corner of theprojection of the jacks will just free the outer surface of the rolls,and if all of the jacks of one section were down and the roll of thatsection rotated the rib of the roll would engage the jacks, commencingat one end of the series and moving them alternately upward to theirextreme upward position, and upon a reverse move ment of the roll theywill be moved downward. Thus the needles will be raised and lowcred ateach two rotations of the roll. The roll for one of the needle-beds isso arranged with respect to the roll of the other needlebed that whilethe needles of one bed are being withdrawn the needles of the other bedare being extended. By this arrangement a greater speed can be attained,as it is possible to speed the rollers, and a very short movement isimparted to the segments to make a complete rotation of the rolls, whichis equal to one stroke of the cam-slide in the straight machines nowupon the market.

I claim as my invention 1. A straight-knitting machine consisting of twoneedle-beds having needle-grooves, needles located in the grooves, and aroll for each bed for operating the needles, each roll having a spiralrib extending in its length- Wise direction, and means for imparting areversible rotary movement to the rolls, there being a groove formed oneach side of the rib.

2. A straight-knitting machine consisting of two needle-beds havingneedle-grooves, needles and jacks located in the grooves, each jackhaving an upward-slotted extension, a roll for operating the jacks ofeach bed, each roll having a spiral rib extending in its lengthwisedirection capable of engaging the pro- 10 jeotion of the jacks, andmeans for impartin g a reversible rotary movement to the rolls.

EMIL G. J Ol-IANSON. Vitnesses:

A. J. WEINBERG, A. O. BEHEL.

